Enhancement of the binding energy of charged excitons in disordered quantum wires

被引：20

作者：

Otterburg, T ^{[1
]}

Oberli, DY ^{[1
]}

Dupertuis, MA ^{[1
]}

Moret, N ^{[1
]}

Pelucchi, E ^{[1
]}

Dwir, B ^{[1
]}

Leifer, K ^{[1
]}

Kapon, E ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Lab Phys Nanostruct, CH-1015 Lausanne, Switzerland

来源：

PHYSICAL REVIEW B | 2005年 / 71卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.71.033301

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Negatively and positively charged excitons are identified in the spatially resolved photoluminescence spectra of quantum wires. We demonstrate that charged excitons are weakly localized in disordered quantum wires. As a consequence, the enhancement of the "binding energy" of a charged exciton is caused, for a significant part, by the recoil energy transferred to the remaining charged carrier during its radiative recombination. We discover that the Coulomb correlation energy is not the sole origin of the "binding energy," in contrast to charged excitons confined in quantum dots.

引用

页数：4

共 30 条

[1] Observation of large many-body Coulomb interaction effects in a doped quantum wire [J].

Akiyama, H ;

Pfeiffer, LN ;

Pinczuk, A ;

West, KW ;

Yoshita, M .

SOLID STATE COMMUNICATIONS, 2002, 122 (3-4) :169-173

[2] INCORPORATION AND CHARACTERIZATION OF ACCEPTORS IN EPITAXIAL GAAS [J].

ASHEN, DJ ;

DEAN, PJ ;

HURLE, DTJ ;

MULLIN, JB ;

WHITE, AM .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1975, 36 (10) :1041-1053

[3] High spatial resolution spectroscopy of a single V-shaped quantum wire [J].

Bellessa, J ;

Voliotis, V ;

Grousson, R ;

Wang, XL ;

Ogura, M ;

Matsuhata, H .

APPLIED PHYSICS LETTERS, 1997, 71 (17) :2481-2483

[4] Compositional and size-dependent spectroscopic shifts in charged self-assembled InxGa1-xAs/GaAs quantum dots -: art. no. 073309 [J].

Bester, G ;

Zunger, A .

PHYSICAL REVIEW B, 2003, 68 (07)

[5] Near-field imaging of one-dimensional excitons delocalized over mesoscopic distances [J].

Crottini, A ;

Staehli, JL ;

Deveaud, B ;

Wang, XL ;

Ogura, M .

PHYSICAL REVIEW B, 2001, 63 (12)

[6] METAL-NON-METAL TRANSITION IN HETEROSTRUCTURES WITH THICK SPACER LAYERS [J].

EFROS, AL .

SOLID STATE COMMUNICATIONS, 1989, 70 (03) :253-256

[7]

Esser A, 2001, PHYS STATUS SOLIDI B, V227, P317, DOI 10.1002/1521-3951(200110)227:2<317::AID-PSSB317>3.0.CO

[8]

2-S

[9] Optical excitations of a self-assembled artificial ion [J].

Findeis, F ;

Baier, M ;

Zrenner, A ;

Bichler, M ;

Abstreiter, G ;

Hohenester, U ;

Molinari, E .

PHYSICAL REVIEW B, 2001, 63 (12)

[10] OPTICAL SPECTROSCOPY OF A 2-DIMENSIONAL ELECTRON-GAS NEAR THE METAL-INSULATOR-TRANSITION [J].

FINKELSTEIN, G ;

SHTRIKMAN, H ;

BARJOSEPH, I .

PHYSICAL REVIEW LETTERS, 1995, 74 (06) :976-979

← 1 2 3 →